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Honeywell IAQ Fan options

All,

I have one for you all.

I have a Honeywell IAQ t-stat (largely because of this forum), hooked to a Trane XL15i with a VS AH.

I've been doing some home remodeling, and in the process, creating lots of dust. To prevent the filter from being completely clogged with drywall/plaster dust, I've been having to flip the breaker to the HP and AH to keep the fan from running, because on the tstat, all I can do is set the fan to "auto/on", "on", and "circ". Is there a reason I can't set it to "off"? I can turn the heating/cooling off... but the fan has no option to do this (and doesn't turn off with the heating/cooling). Or am I just stuck flipping the breaker? It would be nice to be able to turn the fan off also in the cases of having a bunch of windows open, so I'm not (in essence) filtering the outdoors.

On the VisionPro the fan is programable. Im willing to bet that for one or more time periods you have the fan programmed to either ON or CIRC. Go through the program and make sure the fan is set to AUTO all the time.

but, if I set the fan to auto, doesn't that make it not run unless the heat/cool is on? I'd prefer to have it run all the time unless I don't want it on. That's part of the whole VS AH, and having it run at low speed all the time to keep the house temp equalized, etc.

The fan auto, on, and circ settings, are independant of the system settings.
If you have a wake, leave, return, sleep program that has the fan set to on or circ. It will run the fan irreguardless of what setting you have the system to, or what you have the manual fan control set to.

okay, I think I get it. So, I set the schedule to "auto" for all the cycles... and then, if I want the fan running all the time, I just set it to "on" in the manual settings. That will override the "auto", as well as let me turn it off completely should I want to.